Update style.css

style.css

@@ -88,6 +88,19 @@
       background-color: #7c3aed;
       transform: scale(1.02);
     }
+    #loading {
+      color: #6b21a8;
+      font-style: italic;
+      animation: pulse 1.5s infinite;
+    }
+
+    @keyframes pulse {
+      0%, 100% { opacity: 1; }
+      50% { opacity: 0.4; }
+    }
+
+    .hidden { display: none; }
+
     pre {
       background: #f5f3ff;
       border: 1px solid #e9d5ff;